88 



AKTHROPODA 



FlG. 92. Larva of clothes moth( Tinea pellionella) 

 half out of its case. Photograph, three times nat- 

 ural size. 



The damage this pest causes annually in Illinois has 

 been estimated at $2,375,000, in Nebraska $2,000,000, and 

 in New York $3,000,000. Not a state in the Union is 

 exempt from its ravages, which are somewhat limited by 

 the woodpeckers, and may be almost entirely avoided 



by spraying the 

 trees in accord- 

 ance with direc- 

 tions furnished 

 by the United 

 States Depart- 

 ment of Agricul- 

 ture. 



Tiny Moths (Tineidae). These are small moths with 

 pointed and fringed wings. Most important among them 

 are the clothes moths, of which there are two common 

 species. 



The southern clothes moth (Tineola biselliella) is of a 

 pale-yellowish color without spots. Its larva, a hairless 

 white worm a half inch long, feeds upon museum speci- 

 mens, furs, feathers, 

 and hair. The ordi- 

 nary clothes moth 

 (Tinea pellionella) 

 may be distinguished 

 from the above species 



i .-, -i -ii FIG. 93. Empty pupa case of the clothes moth. 



by the less pointed 



wings and the presence of a few dark spots on the anterior 

 wings. The white naked larva weaves a cocoon which is 

 carried about and enlarged to meet the growing demands 

 of the inmate. Finally within this cocoon the larva trans- 



